Lighting Fundamentals

Question 1

the deliberate use of light to achieve practical or aesthetic effects

Answer 1

Lighting or Illumination

Question 2

Lighting includes the use of both

Answer 2

Artificial light like lamps and light fixtures

Question 3

Natural illumination

Answer 3

By capturing daylight

Question 4

Is sometimes used as the main source of light during daytime in buildings.

Answer 4

Daylighting

Question 5

can enhance task performance, improve the appearance of an area, or have positive psychological effect on occupants

Answer 5

Proper lighting

Question 6

Is usually accomplished using light fixtures, and is key part of interior design.

Answer 6

Indoor lighting

Question 7

Light is a part of ________, it is visible portion that only thing human eye can see

Answer 7

Electromagnetic spectrum

Question 8

It ranges from around _____nanometers to ____nanometers below that you have infrared and ultra violet.

Answer 8

400, 700

Question 9

The three dimensional equivalent to a two-dimensional angle.

Answer 9

Solid angle

Question 10

The unit of measure for an angle is

Answer 10

Degree (imperial)
Radians (metric)

Question 11

Solid angle is measured in

Answer 11

Steradians (sr)

Question 12

Power, denoted as F, is the flow rate of radiant energy

Answer 12

Luminous Flux

Question 13

Luminous Flux is measured in

Answer 13

Lumens (lm)

Question 14

The amount of visible power per unit solid angle.

Answer 14

Luminous Intensity

Question 15

Luminous Intensity is measured in

Answer 15

Candelas (cd, or lm/sr)

Question 16

A measure of photometric flux per unit area, or visible flux density.

Answer 16

Illuminance (E)

Question 17

Illuminance os measured in

Answer 17

Either lux (lm/m²) or footcandles (lm/ft²)

Question 18

As a surface that is illuminated by a light source moves away from the light source, the surface appears dimmer. In fact, it becomes dimmer much faster than it moves away from the source.

Answer 18

Inverse Square Law